Add a remapping trace to request-based dm. Signed-off-by: Kiyoshi Ueda <k-ueda@xxxxxxxxxxxxx> Signed-off-by: Jun'ichi Nomura <j-nomura@xxxxxxxxxxxxx> Cc: Jens Axboe <jens.axboe@xxxxxxxxxx> Cc: Alasdair G Kergon <agk@xxxxxxxxxx> Cc: Li Zefan <lizf@xxxxxxxxxxxxxx> --- drivers/md/dm.c | 2 ++ 1 file changed, 2 insertions(+) Index: linux-2.6.31.work/drivers/md/dm.c =================================================================== --- linux-2.6.31.work.orig/drivers/md/dm.c +++ linux-2.6.31.work/drivers/md/dm.c @@ -1503,6 +1503,8 @@ static void map_request(struct dm_target break; case DM_MAPIO_REMAPPED: /* The target has remapped the I/O so dispatch it */ + trace_block_rq_remap(clone->q, clone, disk_devt(dm_disk(md)), + blk_rq_pos(tio->orig)); dm_dispatch_request(clone); break; case DM_MAPIO_REQUEUE: -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
